This Chestnut Display Driver/Boost IC has a built-in high efficiency boost regulator.
Unused sinks are disabled by tying them to ground. The boost output automatically adjusts its voltage to the WLED forward voltage to improve efficiency.
This stobe/flash driver/boost IC supports multiple brightness dimming methods.
iPhone X / XS / XSMAX designation: U5600
Port Marking: 65730AOP
It’s also known as: Chestnut Display Driver / Boost IC.
Compatible with A1865 / A1920 / A1921